- Catechism of the Catholic Church (online version)
- Catechism of the Catholic Church (amazon.ca link)
- Prayer Primer, by Fr. Thomas Dubay (amazon.ca link)
- Fire Within, by Fr. Thomas Dubay (amazon.ca link)
- Difficulties in Mental Prayer, by Fr. Eugene Boylan (amazon.ca link)
- Difficulties in Mental Prayer, by Fr. Eugene Boylan (Google Books link)
- A School of Prayer: The Saints Show Us How to Pray, by Pope Benedict XVI (amazon.ca link)